Automatic change-making machine



Feb. 4, 1930. E M, CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. l0, 1927 12 Sheets-Sheet l CHANGE CHANGE CHA/V65 d lu CHA/V65 CHANGE 33333 AMl/E 3 a 3 3 a PENN/Es aas 222222222 /z/z/z/z /l/A//l/l/sss 444444444 a .fo 4o 39 39 35 34 34- 3# 5a 5o 36 36 35 3l 3/ 3/ 4 l .-1 TTORNEY,

Feb. 4, 1930. E. M, CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. 10. 1927 l2y Sheets-Sheet 2 CHA NGE CHANGE CHANGE CHA NGE A TTORNEY.

Feb. 4, 1930. E M CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. 10, 1927 12 Sheets-Sheet 5 fifd 7/ im BY l . Feb. 4, 1930. E. M. CAMP AUTOMATIC CHANGE MAKING MACHINE Filed Sept. 10, 1927 12 Sheets-Sheet 4 umm Ell mm E E mv E E who E S o ww o E e@ Se a mm2 m oQ om QS n m2 mm2 o;

Feb. 4, 1930. E, M, CAMP v 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed sept. 1o, 1927 12 sheets-sheet 5 y INVENTOR. [ame Mom/,1w sw .4 TTORNEY.

Feb. 4, 1930. E, M, CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept 10. 1927 12 sheets-sheet 6 Y JNVENTOR.

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Feb. 4, 1930.

E. M. CAMP AUTOMATIC CHANGE MAKING MACHINE Filed Sept. l0, 192'? l2 Sheets-Sheet 7 INVENTOR. [069/2 Mmm/@ [af/ ATTORNEY.

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Feb. 4, 1930. E, M. CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. l0, 1927 12 Sheets-Sheet 8 @V7 INVENTOR.

A TTORNE Y.

Feb. 4, 1930. E, M, CAMP '1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. lO, 1927 12 Sheets-Sheet 9 ATTORNEY.

Feb. 4, 1930. E, M CAMP 1,745,737

AUTOMATIC CHANGE MAKING MACHINE Filed Sept. l0. 1927. 12 Sheets-Sheet 10 A TTOIRNEY.`

Feb. 4, 1930.

E. M. CAMP AUTOMATIC CHANGE MAKING MACHINE Filed sept. 1o, 1927 -12 sheets-sheet 11 www* Y z5 ,foo 5o 75 A TTORNE Y.

Feb. 4, 1930.

E. M. CAMP AUTOMATIC CHANGE MAKING MACHINE Filed Sept. 10, 1927 l2 Sheets-Sheet l2 INVENTOR. foam /79 mmv IMP ATTORNEY.

Patented Feb. 4, 1930 f UNITED Nsinceri-:s

PATENT OFFICE l 'EDGAR MAYN'ARD CAMP, 0F DETROIT, MICHIGAN, ASSIGNOR TO RECORDING CHANGE MACHINES INC., OF DETROIT, MIICHIIGAN,` A CORPORATION OF MICHIGAN AUTOMATIC CHANGE-MAKING -MACHINE Applicationled September 10, 1927. Serial No. 218,787.

' Thisinvention relates to automatic change making machines and the' object of the invention is to'provide an automatic `change making machine of the selective type in i i which a key representing the amountof a automatically ejects the proper change in' coins for any given transaction.

Another object of the invention is to provide a keyboard carrying the keys representing sales amounts from 1 cent to 99 cents and so arranged in rows laterally and longitudinally that any key in any row performs a function common to all of the keys in that particular lateral or longitudinal row.

'lhese objects and the several novel features of the invention are hereinafter more fully described and claimed and thepreferred form of construction by which these objects are attained is shown in the accompanying drawings in which- Figs. l and 1A are diagrammatic views of a chart on which the fundamental principles underlying the operation of the machine are based.

Fig. 2 is a plan View of the keyboard ofthe machine and operatinglevers.l

Fig. 3 is a diagrammatic view showing the relationship between thev keyboard and the silver selector slides and including a chart on whichthe operation and construction of the silver selector slides are based.

Figl is an elevation of the front of the machine.

.Fig. 5 is an elevation ofthe right end ofthe machine. f

. Fig. 6 is a; section taken on line 6-6 of Fig. 4. Fig. 7 is a detail showing the mounting for the selector slides and compensating 4 mechanism for the parallel penny bars. n

Fig. 8 is a plan view partially in section of the penny selector slidesmounted on a bracket supported vfrom the right hand lside frame of the machine. y

Fig. 9 is an elevation thereof.

Fig. 10 shows the relative position of the lower ends yof the key stems and parallel penny bars operated thereby and the nickel and .silver selector slides and release slide.

Fig.v 11 is a plan view of the mechanism with which the lower lugs of the nickel selector slides co-act.

Fig. 12 is an elevation of the three nickel selector slidesshowing thel relative position of the release lever studs therewith.

Fig. 13 is a section showing .the lock and release mechanism for the operating levers.

Fig. 14 is a perspective View of one of the primary selector shutters.

Fig. 15 is a perspective view of one of the secondary selector shutters.

F ig. 16 is a section showing one of the operating levers and the enabling mechanism from which the nickel ejecting mechanism may be operated.

Fig. 17 shows the relative position of the secondary selector shutters in relation to the silver selector slides.

F ig: 18 is an enlarged view of a portion of the nickel selector system taken from the right hand of F ig. 11.

Fig. 19 is a side elevation of one of the enabling levers for the silver selection system.

ig. 20 is an elevation of the 11 selector slides for the silver selection system.` V

l Fig. 21 is aperspective View of the relative position of the key stems with one of the primary selector shutters;

Fig. 22 is a section taken on line 22-22 of- Fig. 5 showing the ejection mechanism for the penny system.

Fig. 23 is an elevation of the operating lever releasef'slide.

Fig. 24 is a section similar to Fig. 16 showing a portion of the enabling mechanism for the silver selection system... f

The operation of the machine is based on the chart shown in Figs. 1 and 1A. The horizontal columns von the chart represent the amounts receivable. amounts due, and the change to vbe returned in pennies, nickels, dimes, quarters and half dollars. Amounts duerepresent the amount of the sale and the amounts receivable for the particular amounts due are listed in the amounts receivable row directly above the amountsy due row. This machine contemplates the return of change in coins for any sale from 1 cent to 99 cents. A.s shown in Fig. 2 the sale keys are numbered to represent the sales from 1 cent to 99 cents and are arranvedl in twenty longitudinal rows corresponding to the twenty vertical rows on the chart and in five lateral rows corresponding to thefve horizontal rows on the chart. yThe sale keys are numbered consecutively starting at the bottom right hand end of the keyboard and numbering upwardly in each row vconsecutively and toward the left hand end of the keyboard. The amounts receivable for these sales are represented by the live keys at the bottom of Fig. 2 numbered 100, 50 25-75, 10 and 5. The chart is laid out with the saine arrangement as the sales key keyboard shown in Fig. 2. That is, in the first square at the bottom right hand end of the chart the sales amount or amount due is 1 cent, in the square above the amount due `is 2 cents, then 3 cents, 4 cents and 5 cents. In the second vertical row the amount due isV 6 cents and this row is numbered consecutively in vertical order to 10 cents so that the squares on the chart outlined in heavy black lines are in the same position as the keys on the keyboard. When the amount due is 1 cent as indicated in the square at the lower right hand corner of the chart in Fig. 1 and the amount tendered is 1 dollar in the amounts receivable row, by reading downwar ly in the vertical column marked 100 it will be seen that the change to be returned to the customer consists-of 4 pennies,'2 dimes, 1 quarterand 1 half dollar, making a total of'99 cents returned from 1 dollar for a 1 cent purchase. Similarly if the amount received 'is 50 cents for a 1 cent purchase the change tobe returned consists of 4 pennies, 2 dimes and 1 quarter. If 25 cents is the amount received the change paid out by the machine should consist of 4 pennies and 2 dimes. In the next vertical column reading downwardly if the amount received is l() cents for a 1 cent l purchase the machine must return 4 pennies f quarter.

and 1 nickel. In the nextA column if the amount received is 5 cents the machine must return 4 pennies.

In the next square to the left the amount due is 6 cents and if the amount received is l dollar the change to be returned by the machine consists of 4 pennies, 1 nickel, 1 dime, 1 quarter and 1 half dollar. If the amount received is 50 cents the changeto be returned consists of 4 pennies, 1 nickel, 1 dime and 1 If the amount received is 25 cents the coins returned should be 4 pennies, 1 nickel and 1 dime. If 10 cents is received on a 6 cent purchase the amount returned should be 4 pennies. It will be noted that for any amount'receivable for a 1 cent or 6 cent purchase it is necessary to return 4 pennies. Thisl is also true for an 11 cent, 16, 21, 26, and 31 cent purchase and so on in the lower horizontal row across the chart. In the second horizontal row across the chart it is necessary to preturn 3 pennies on any sale made in that row in which the sale or amount due is 2, 7, 12, 17 cents and so on. In the third row it is necessary to return 2 pennies for each sale; In the Jfourth horizontal row it is necessary to return l penny on each sale. In the top row the amounts due end in 5 and 0 and no penzontal row of sale keys it is necessary to re-` turn 2 pennies and upon depressing any key in the fourth lateral row it is necessar tov return 1 penny.v For this purpose four ars are provided as shown in Fig. 5 numbered 1, 2, 3 and 4. The upper edges of these bars are turned over as shown to provide a flat face on which the lower ends of the sale key stems rest.l The bar 4 extends beneath the first lower lateral row of key stems while the bars- 3, 2 and l extend beneath the key stems in the succeedinglateral rows of keys. As shown in Figs. 4 and 7 a bell crank 5 is provided at each end of each of the four bars and each bell crank is pivotally mounted in a bracket 6 secured to the "adjacent side frame of the machine. One end of each bell crank 5 is pivotallysecured tothe adjacent end of the respective bar while the vertical arm is pivotally secured to an equalizing bar 7 extending in parallel relation with the respective bars l, 2, 3 and 4. By this arrangement downward pressure applied to any point on any of the bars numbered l, 2, 3 and 4 causes the bar to move downwardly uniformly asV the bell cranks 5 maintain the bars 4 and 7 in parallel cured to the right hand'side frame of the machine and is provided with depending ears l 13 shown in Fig. 9 on which the bell cranks 8, 9, 10 and 1l are pivotally mounted. A pair.

of guide brackets 14 are secured to the bracket 12 and three slides 15, 16 and ,17 aretslidably mounted in the brackets 14. These slides are drawn to the right of Figs. 8 and 9 by the springs 18 which are attached to the slides and are secured to an arm 19 which is fasaol '- clockwise movement of the bell crank A8 moves the slides 16 and 17 to the left of Fig. 8. The slide 17 is provided with an upwardly extending cam l22 and the slide 16 is provided with an upwardly extending cam 23 while the slide is provided with an upwardly extend' ing cam 24. By movement of the slides 1 6 and 17 to the left of Fig. -8 the cams 22 and 23 are moved to the left of Fig. 8. As show inv Fig. 22 the cam 22 is adapted to pass beneath a pawl 25 which is pivotally mounted in an arm 26 secured. to the shaft 27. An ejector arm28 is pivotally mounted 'on the shaft 27 and is provided with an extending end 29 and the pawl 25 is normally held out of engagement with the endI 29 by the spring' 30. Upon movement of the' slide 17 and cam 22 by the stud 21 on theA bell crank 8, the cam 22 is moved under the pawl 25 and raises the paWl upwardly on its pivot so that the end of .the pawl engages over the end 29 of the arm 28.. Upon subsequent rotation of the shaft l27 and arm 26 secured thereto-the pawl 25 engaging the endl 29 turns the ejector arm 28 with theshaft'27. The ejector pawl on the upper end of the arm 28 is provided with a deeper notch than the other ejector pawls and is adaptedto eject two pennies from the stack immediately thereover. Thecam23,'asshown in Figs'. `5 and 9, is adapted to engage beneath a pawl 3-1 shown in Fig. 5 which is pivotally mounted on an arm32- attached to the shaft 27 and the cam 23 is adapted to move the pawl 31 into engagement with the end f the arm 33. lThis construction is the same as that shown in Fig. 22 and the arm' 33 isr adapted to eject 2 pennies from the coin stack positioned directly thereover. Thecam 24 shown in Figs.

5, .8 and 9 is formed integrally with the slide ,'15 and upon movement to the left engages beneath the pawl 34 pivotally mounted on an arm 35 secured to the shaft 27 vandthe end of the pawl is adapted to be engaged over the lower end of the larm 36 whichis pivotally `mounted on the shaft 27. 1 This arm 36 is vadapted upon 'movement' to eject 1 penny from a coin stack which is preferably positioned directly thereover. Referring to Fig. 8 it will be noted that the stud 21 upon downward movement of the bar '4 moves thel two slides 16 and 17 to the left producingmovement of the cams 22 andl 23 and engaging the pawls 25fand 3] over the lower ends of the ejector arms `284 and 33 which upon subsequent turning of the shaft 2,7. are adapted to eject 2 pennies from each 'coin-stack thereabove making a total of 4 cents. By this arlower lateral row across the keyboardy sets up enabling mechanism to eject 4 pennies but the actual ejection or movement of the ejector levers'does not take place until the shaft 27 1s turned by a mechanism hereinafterv described. The stud 37 shown in Fig. 8 extends through' slots in all three slides but only engages sl1des'15 and 17. Upon movement .of

this stud to the left, produced by' downward.

movement of .the bar 3, the slides 15 and 17 are moved to the left producing a correspond- .ing movement of the vcams 22 and 24which moves the enablingl pawls 25 and 34 over the lower ends of the ejector arms 28 and 36 so that upon subsequent rotation of the shaft 27 in a counterclockwise direction in Fig. 22 the arm 28 ejects 2 pennies from its coin stack rangement, the operation of Aany key in the while the arm 36 ejects one penny from its coin stack making a total of 3 cents returned upon depression of an key in the second lower lateral row on the ke pression of anykey in the third lateral row it is necessary to return two cents to the customer and any key in this row will depress the bar 2 to move the stud 38 to the left of Fig.

8. This stud engages only the slide 16 which pawl 34 over the lower end of the arm 36 so that when the shaft 27 is turned in a counterclockwise direction 1 penny is ejected from the coin stack with which this arm is operative. In this manner the first operation upon'.

the depression of any sale key is to enable the machine when operated to return the correct number ofpennies. VAs shown in the upper portion of Fig. 4 each key stem is provided With a lug 40 and a spring pressed shutter 41 is pivoted at 42 in the machine frame so that when any key stem is pushed downwardly the shutter 41 engages behind the lug 40 to hold the key stem in the depressed position against its return spring 147 until the shutter 41 is released.

Three separate selection-systems are incorporated in the machine, the first being the penny system just described, the second'being the nickel system and thex third 'being the silver system which takes care of the dimes, quarters and half dollars. The penny system as hereinbefore described, and as shown in Fig. 10, is operated bythe lower ends of' yboard. Upon de-j arms 48 which are formed integrally with the respective shutter. Upon downward movement of any key stem as 'will be understood from vFig.'7, the res ective rimary selector shutter 44 is turne in a c ockwise direction on its pivot 46, the action being similar tothe action of a bell crank. As will be understood from Fig. 4 twenty selector shutters are pivotally mounted in the'machine corresponding to the twenty vertical or longitudinal rows of keys in the sales keyboard shown in Figs. 2 and 4. By this arrangement when any key in any one of the twenty longitudinal rows is depressedthe primary selector shutterfor that row of keys will be turned on its pivot 46 to a corresponding degree.

Fourteen selector slides are provided, three of which are for the nickel system and eleven yof which`are for the silver system. These slides extend across-the machine transversely at rightfangles to the different primary selector shuttersand the different slides are provided with lugs adapted to be engaged by .the hails-47 of the. primary selector shutters as will be understood from Figs. 4 and 7. The three selector slideslfo'r the nickel system are shown in Fig. 12 and are numbered 49, 50 and 51. The relative position of these slides to the slides of the. silver system is shown in Figs. 10 and 5. As shown in Figs.

4 and 7 these selector slides for both the nickel and silver systems rest 'on the brackets 6 secured tothe side frames of the machine to hold the selector slides in an upright'position.- A spring 53 shown in Figs. 12 and 20 is secured to each slide and to an adjacent portion of the machine tending'to draw `the vrespective selector slides to the right and holding the lugs on the u per edges thereof in engagement with the ails 47 of the \re spective primary selector shutters. By this arrangement the depression of any sale key will turnv the respective primary lselector shutter on its pivot so that thev bail 47 of that shutter will move any slide to the left having a lug on the upper edge engaging the bail of that shutter.I

As shown in Fig. 11 five studs are provided numbered 54,-55, 56, 57 and 58. ,A cross framemember -59 is provided shown in Figs. 11 and 18 which connects the two side frames of the machine. A bracket 60 is secured to the frame member 59 as shown in Fig. 11 and is provided with five extending lugs sup,-

anmsv porting the pivot pins 61 for the pivoted members 62. The studs 54, 55, 56 57 and 58 are secured to the (pivoted members 62 as shown in Fig. 18 an each member 62 is provided with a stop 63. reventing downward movement of the mem r 62 and res ective stud. Each member 62, as shown in lp and 18,'is providedwith a depending arm 64 carrying a pm 65 1n the lower endthereof. Thispin'65 engages in a notch 66 in'a latch 67 which is` pivotally mounted at 68 shown in Fig. 11 on each respective operating lever 69, 70, 71, 72(` and 73. The back of the notch 66 is cut `on a radius whose axis is the centerof the shaft 74 on which the respective operating lever turns. By downward movement vof the lever 73 shown in Fig. 18 the latch 67 is-moved downwardly therewith and the pin 65 which, with the arm62 remains stationar at this time', rides'in the notch 66 of the latc 67 and prevents the end of the latch 67 'from engaging the companion arm 75. The levers 69, 70, 71, 72 and 73 are allrotatable on thev ,mam operating shaft 74 durin the first or rimary downward movement t ereof `as will e understood from Figs. 2 16 and 24, until the extending ends thereof engage the bail igs. 11

130 at which time the shaft 74 is rotated by the operating `lever engaging the bail and by means of the 6 the shaft'9l is--ro'tated to operate the mechatnislrxn for ej'ecting the `coins from the coin s ac s.

gears 131 and 132 shown in Fig. o

Thus there are two functions embodied in one continuous downward move ment of any operating lever, the first or ri- `mary movement setting the 'enabling mec anism for ejecting the selected coinsy and the secondary movement rotating theshafts 74 and 91 and actually e'ecting'the coins. A

the nickel selector on the bottom resting on the stud 56 and the selector slide 51 is provided with a lug 78 resting on the-stud 58. As hereinbefore ex` plained the selector slides are adapted to,be moved to the left by the bails 47 of the primary selector shutters. Vhen'any of these slides are moved to the left the respective lug is moved olf from the companion stud and the spring 79 shown in Fig. 18 draws the latch 6 to the right and as this latch 67 is in en! gagement with the pin 65 the `member 62 which is in theform of a bell crank is turned in a counterclockwise direction until the latch 67 engages the end of the companion arm 75. This .positions the end of the latch `67 in engagement with the companion arm 75 so that if the lever 73 is pressed downward at this time the latch 67 and arm 5 are carried downwardly therewith.

516 which are supported in the members 80 and 143. The. members 8O and 143 are-rotatable on the main operating shaft 7.4 yand together with the rods 102 form 'a frame-work adapted to be swung against the tenslon of 10 the spring 123 on the shaft 74. This framework may be swung by downwardA movement 'of any latch 67 when it engages with its companion arm 75 as will be understood from Fig. 18. The member 80 carries a stud 81 riding on the end 820i a cam lever 83 which is rotatable on the fixed shaft 84. This lever 83 at the opposite end is' provided 'with a toggle joint connecting it with the shaft 85 which is the enabling shaft for setting the 2o nickel release mechanism. This shaft 85, as

' shown in Fig. 6, is rovided with an arm 86 having a flattened ug-87 shown in Figs. 5 and 6. When the member 80 is turned on the shaft 74 the stud-81 turns the cam lever 83'on its pivot and by means of the toggle joint shown in Fig. 16 the shaft 85 is turned. vin a counter clockwise direction. By this ,ar-l

rangement the arm 86 on the end of the `shaft having the iiattenedlug 87 shown in Figs. 5

3Qand 22 is moved downwardly allowing the lspring 88, shown in Fig. 22,.to engage theenabling pawl 89 over the` end of the lever 90 which is rotatable on the shaft 91. The arm 92 on which the pawl 89 is pivoted is secured to the shaft 91 'while the rotatable lever 90 is provided with an upper end 93 which isl connected by means of a toggle joint to the lever 94 which is rotatably mounted on the stationary portion of the shaft 27. ,By this arrangement clockwise rotation of the shaft A. chute is preferably provided for deliver 91 and lever end 93 turns the lever 94 in a counter clockwise direction-and this lever has a notched upper end for pushing a nickel out of the coin stack immediately thereabove.

ing the coins to the customer after they have been ejected from the stacks.

Referring to the chart at the right end of i Fig. 1, in the vertical column in which the 5o* amounts due are from 1 to 5 cents, it will be noted that when 10 cents is the amount received for any amount in this vertical column it is necessary to return a nickel. For this lreason a lug 96 is providedy on the top of the 5 selector slide 50 shown in Fig. 12 and this lug 96 is in engagement with the bail 47 of the' primary selector shutter which is operated' y the first vertical row of keys shown. at the l, right hand end of Fig. 2. The position of this C3 bail is indicated bythe dotted lines in Fig.

12 bearing the numbers 15. It will thus be seen that the depression of any key in the first vertical or longitudinal row will move the slide t'o the left of Fig. 12 allowing the stud 57 'to raise under action by the spring 79 shown in Fi 18 so that when the 10 cent the chart itis necessary to return a ,nickel when the'amount received is a quarter, half dollar or a dollar. vFor this reason the lug 97 is provided on the top of the selector slide 49 and lies in contact with the bail of the primary selector. shutter for the second longitudinal row of keys shown in Fig. 2v and numbered from 6to 10. In Fig. 12 the positon of this bail is indicated by the dotted lines numbered 6--10. When this slide 49 is moved to the left by movement of the said bail the lugs 76 on the bottom of the slide 49 lare moved off from the studs 54, 55 and 56 allowing these studs to rise as will be understood from Fig. 18 so thata subsequent depression of the quarter, half dollar or dollar amount received ke s at the bottom of Fig. 2 will e'ect a vnickel fiom the coin stack. The dime ey for amounts receivable shown in Fig. 2 is depressed when the amount received is the multiple of ten with the exception of the half dollar and dollar' amounts. Thus if the amount received is 10, 20, 3;), 40, 60, 70, l80 or 90 cents the dime key marked 10 at the bottom. of Fig. 2 is depressed. The nickel key for amounts receivable is depressed for all amounts receivable ending in fivewith the exception of the 25-75 key. This nickel key numbered 5 is used when the amount received is 5, 15, 35, 45, 55, 65, 85, 95' and 1.05`cents. $1.05 is receivable ,for a sale of 96 to 99 cents in the last column 'on the keyboard and would consist ofa half dollar, a quarter and 3 dimes or 3 quarters and 3 dimes.` For this reason the bail forthis last -vertical row of keys for sales amounts or amounts due yfrom 96 to 99' cents engages the lug 98 on the selector slide 51 moving this selector slide to the left and allowing the stud 58 to raise s that when the nickel amount received key is depressed a nickel is returned, the remaining change being of course taken care of in the penny system- Referring to the chart in the fifth vertical column from the right endy of Fig'. 1 it will be noted that when the amount of the sale or amount due 1s 21 to 25 cents and the amount received is 30 cents it is necessary to return a nickel when-l any one of these ive keys is operated. For this purpose the bail iis of the primary selector shutter for this longitudinal row of keys contacts the lug 99 on the slide 50 shown in Fig. 12'and moves the lug 77 on the bottom of this slide oi the stud sol from the coin stack. When the amount of the -sale is from 26 to 30 cents, as shown in the sixth vertical column from the right end of Fig. 1, and theamount received is 35 cents it is necessary to return a nickel. The bail operated by any key in this row engages the lug 101 on the slide 51 and moves this slide to the left of Fig. 12 so that-the lug 78 on the bottom moves 0H from the stud 58 so that subsequent depression of the amount received key bearing the number 5 at the bottom of Fig. 2 will eject a nickel from the coin stack.

The bails 47 f the primary selector shutters which extend across the three nickel selector slides shown in Fig. 12 also extend across the upper edges of the eleven silver selector slides shown in Fig. 20 and these eleven selector slides are provided ywith lugs as shown on the upper edges engaging the bails 47 of the primary selector shutters. Referring-tothe chart in Fig. 3, this chart is an exact index for the number ofl selector slides required in the silver'system and the arrangement of upper and lower lugs thereon. A selector slide is required for each vertical row of sale keys whose tabulations on theysaid` chartl differ. The chart shows eleven such di'erences hence eleven selector slides are necesasry. The longitudinal bails'47 on the primary selector shutters 44 contact the upper lugs on the selector slides and operate them thereby. The lower lugs on the selector slides contact the secondary selector shutters, (mounted in brackets on the 69,l 70-and'71 operating levers) and operate the secondary selector shutters 104 thereby..Y Each key in any given lon` itudinal row of five keys will thus operate t e same selector slide or slides. Hence, and as will be understood from said chart, selector slides numbered 1, 4, 7 and 1.0 require one upper lug only while two are necessary for selector slides numbered 2, 3, 5, 6, 8, 9 and 11. A further illustration ofthe number and location of both upper and lower y lugs on the selector slides is disclosed on the diagram at the bottom of Fig. 3 wherein'the tabulations on the chart are graphically positioned and designate In this diagram the contact points between the bails 47 of the primary selector shutters and the lugs of the silver selector slides are indicated by black squares on the selector slides. The position o the bails 47 of the primary selector shutters is indicated by `the vertical dotted'lines and the key numbers operating these hails are indicated in each line. It will be noted that twenty bails are provided corresponding to the twenty longitudinal rows of keys but only the lirst eighteen actuate the silver selector slides as no silver is returned in taking more than 90 cents from a dollar. A s will be readily understood from Fig. 7 depression of any key stem by means of theshoulder 43 thereon turns the respecive primary selector shutter on its axis 46 so that the bail 47'of that selector shutter engages the companion lug on the respective selector slide and moves the selected selector slide to the left against the tension of a spring 53 shown in Fig. 2 0 which is attached to a convenient portion of the machine frame. The silver system is controlled by the three amount received keys marked 1 dollar, 50 and 25--7 5 in conjunction with the eleven silver selector slides shown in Fi s. 3 and 20. These keys are attached to the t ree operating levers 69, and 71 as shown'in' Fig. 4 and a bracket 103 is attached to each of these levers as will be understood from Figs. 4, 16 and 17. Four secondary selector shutters 104, shown in Figs. 4, 15, 16 and 17 are pivotally mounted in the arms of the bracket 103 which is secured to the operating lever 69. Three secondary selector shutters 104 are pivotally mounted in the bracket 103 on the operating lever 70 and two secondary selector shutters 104 are pivotally mounted in the bracket 103 on the operating lever 71. The upper edges of these selector shutters, as will be understood from Figs. 15 and 17, engage the lugs on the bottom of the silver selector slides shown in Fig. 20.` As will be noted from Fig. 20 there are nine different rows of. lugs on the bottom edges of the eleven selector slides which co-act with 'the upper edges of the nine secondary selector shutters 104 which are preferably spring urged into engagement with their respective lugs. C0- v operative with these nine secondary selector shutters are nine enabling levers 105, 106, 107, 108, 109, 11,0, 1 11, 112, and 113. These enabling levers as shown in Fig. 6 are rotatabl mounted on the main shaft 74 and are eac provided with a 'stud 114 shown in Fig. 19 at the lower end ridin on the curved end of a bell crank 115v Whic 1 is rotatable on the stationary shaft 84. Each enabling lever is provided with a notched lug or end 116 having a V notch therein as will be understood from Fig. 17 and the secondary selector shutters are each provided with a lug or end 117 shown in Fig. 15 adapted to be moved into alignl ment with the notch 116 of the respective enabling lever. The secondary selector shutters normally are in position shown in Fig. 17 so that upon continued depression of any of the levers 69, 70 or 71 the secondary selector shutters are carried downV with these levers and pass inoperatively between their companion enabling levers.v The purpose of any silver selector-slide is to turn kcertain of these secondary selector shutters on their pivots so that the lugs or ends 117 thereon engage in the notched lug or ends 116 on the enabling levers. When this has occurred the depression of the respective amount received levers 69, 70 or 71 turns these-selected enabling levers in a counter clockwise direction on the shaft 74, as will be understood from Fig. 4. As will be understood from Fig. 19 this turning movement of any enabling lever is communicated thus turnin the bell crank on the stationary shaft 84. here are nine of these bell cranks 115 rotatably mounted on the shaft 84 as 1lir - is operated shown in Fi 6, one for each enablin lever land each of t ese bell cranks is-pivotal y connected at the lower end to an enablin 'hnk j 118. The enabling link 118 shown in lgs. 6

and 19 which is o erated by the enablinglever 105 is pivotal y connected to an arm 119 secured to the rock shaft 120. Thus when the enabling lever 105 is depressed as'will be understood from Fig. 6 the bell crank 115 moves the enabling link 118 to turn the rock shaft 120 by means of. the a-rm 119. This turns the arm 121 on the end of the rock shaft 120 so that the lug 122 moves downwardly allowing the pawl 89 to engage over the lever 90 so that upon rotation of the shaft 91 and arm 92 secured thereto, the upper end 93 ofthe lever by means of the toggle joint turns thelever 94 on the shaft 27 as its pivot to eject a half dollar from the coin stack immediatel there- 'above as will be understoodfrom Figs. 4,5 and 6. Therock shaft 124 shown in Fig. 6, is

operated by turning the enabling levers 106 or 109 and by an exactl similar mechanism the turning of ythis sha t 124 prepares 'the machine to eject a quarter from the coinv stack immediatel thereover. Therock shaft 125 i by turning the enabling lever 107, 110 or 112 and by means of the arm on the 'end thereof sets the enabling mechanism to eject a dime from the coin-stack immediately v thereabove. The rock shaft 126 is operated from the enabling lever 108, 111 or 113 and in all other respects is the same as the shaft 125 and upon rotation sets the enabling mechanism to eject a dime from the coin stack immediately thereabove. It will thus be seen 'that the coin stacks are arranged in one stack containing half dollars, one stack containin (quarters, two stacks containing dimes an one stack containing nickels -operated from the rock shaft 85. Referring to Fig." 17 it will be noted that the vfour secondary selector shutters 104 carried by the operating lever 69 control the first four enabling levers 105, ,106,

'107 and 108. When these four enabling levers are engaged by the said shutters and turned downwardly by depression of the operating lever 69 the four rock shafts 120, 124, 125 and 126 are turned setting the enabling mechanism to discharge a half dollar, a quarter and two dimes. The operating lever 70 by means of the secondary selector shutters 104 carried thereon controls the enabling levers 109, 110l and 111 shown in Figs. 6 and 17.

These three levers through the mechanical movements hereinbefore described fupon being operated are adapted to turn the rock j shafts 124, 125, and 126 setting the4 enabling mechanism to eject a quarter and two dimes. Referringagain to Fig. 17 the operating lever 71 carries twosecondary selector shutters `Fig..6 to set the enabling mechanism to discharge two dimes. As hereinbefore described and as will beunderstood'from Fig. 17 the eleven silver selector slides control the nine secondary selector shutters 104 carried by the operating levers 69,70 and 71 so that this selection system predetermines which of the rock shafts will be turned by downward movement of the said operating levers.

In Fi 3 at the top a condensed chart is shown's lowing the silver to be returned for any given transaction. For instance, as shown at'the right hand end of this-condensedchart shown in Fig. 3 and as is also shown 'at the' right hand endof the chart in Fig. 1 it will be noted that when the amount due is 1 to 5 cents and the amount received is 1 dollar the amount of silver to be returned conter and`when 25 cents is received it is necessary to return 2 dimes. For this reason nine lugs are provided on the bottom of slide Number 1 shown in Fig. 20 so that when slide Number l1 is moved to the left by the bail 47 operated by the 1 to 5 row of keys shown. in Fig. 3, all nine of thesecondary selector shutters 104 carried by the three operating levers 69, 70 and 71 are turned on their pivots into alignment with the nine enabling levers 105 to 113. By this arrangement when the operating levery 69 is depressed the enabling mechanism of the machine is set to ej ect a half dollar, a quarter and two dimes, as will be understood from Fig. 6 hereinbefore described. lVhen the operating lever 70 as shown in Fig. 17 and indicated by the bracket bearing the number 50, vat the bottom of Fig. 20 is depressed, the enabling mechanism is set to eject a quarter and two dimes and when the lever 71 is depressedthe' enabling mechanism is set to eject two dimes. 4As shown on the chart in Fig. 3 slide Number 2 takes care of the silver returned on amounts from 6 to 10 cents and 11 to 15 cents, taken from a quarter, half dollar or a dollar. It w-ill be noted from the diagram in the lower part of Fig. 3 that slide Number 2`takes care of two vertical rows on the keyboard and lugs are provided on the bottom of this slide at the points indicated by the circles thereon and these lugs are shown in' elevation on slide Number 2 shown in Fig. 20. After this slide has been moved to the left depression of the dollar key 69 will acand 107 to set the enabling mechanism to eject .tuate only the three enabling levers'105, 106

nism to eject a dime. This system is carried through theelevcn slides until the eleventh slide will set the enabling mechanism to eject a dime only when the dollar operating lever 69 is depressed.

As will be understood from Figs. 2 and 6 all of the parts mounted on the drive shaft 74 are rotatably mounted thereon with the except-ion of the. three arms 127 128 and 129 shown in Fig. 2. These three armsare secured to rotate' with the shaft\74 and support a hail 130. The ends of the Ilive operating levers 69, 70, 71, 72 and 7 3 extend beneath this bail as shown in Figs. 2, 16 and 24 and suicient lost motion is provided so that the first downward movement of any -of these operating levers sets the enabling mechanism by engaging the diii'erent-pawls over the di'erent ejecting levers on the right end of the machine. After this iirst movement of any of the o erating levers, the eX-` tending en'd of the ever engages the bail 130 shown in Figs. 2, 16 and 24 and turns the shaft 74 with the respective lever. The shaft 74, as shown in Fig. 6, is provided with a bevel gear 131 on the right handend thereof meshing with the beveled gear 132 on the shaft. 91. With this larrangement the turning Vof the shaft 74 by any operating lever turns the bevel gear 132 and shaft 91 in a` clockwise direction thus turning the arms 92 secured thereto with the shaft 91 and the pawls which are in engagement with the levers 90 turn the levers-90 with the shaft' 91.

vThe levers 90 are connected by toggle joints as shown in Figs. 4 and 5 with the-five ejection levers immediately thereabovewhich are pivoted on the shaft 27 and are adapted to eject a half dollar, a `quarter, two dimes and a nickel. The portion of the shaft 27 at the left of Fig. 5 is stationary while the ejection levers are rotatably mounted thereon. The portion of the shaft 27 at the right of Fig. 5 is rotatable and is provided with an arm 134 secured thereto as shown in Fig. 5 which is connected by a toggle joint with the arm 135 which is secured to the shaft 91. By this arrangement when theshaft 91 is rotated in a clockwise direction the rotatable portion of the shaft 27 carrying the arms 26, 32 and 35 secured thereto is rotated in a'counter-clockwise direction and any of the pawls 25, 31 and34 which are in Iengagement with the penny ejector levers 28, 33 and 36 turn these ejector levers with the shaft 27 to eject the selected amount of pennies. Y

In order to prevent operation until one of the keys on the main vkeyboard is depressed the release slide 136 shown in Figs. 11, 13

'and 23 is provided. This release slide 136 is provided with twentyY lugs 137 adapted to be engaged by the bails 47 -of thel twenty slide y136 and thev` release slide is provided' with notches 140 normally held out 'of alignment with the latches 139 as shown in Fig. 11. When any -key on the amount due or sale keyboard isdepressed the respective prilease slide 136 to the left so that the notches 140 therein register with the latches 139 and with the notches 141 cut in the frame member 138 so that at .this time any of the live operating'levers 69, 70, 71, 72 and 73 may be mary selector shutter bail 47 moves the redepressed and upon return the latch139 is turned' on its pivot against the tension of the spring 142 and again engagesover the upger edge of the release slide 136.

t s an example ofthe operation of the ma\ chine we will suppose that a seven cent lsale has been made and a dollar tendered 'by the' l purchaser. The operator first depresses the Number Z sale key at the right end of the keyboard shown in Fig. 2 and then depresses the one dollar amount received ke 69, shown at the bottom ofv Fig. 2, causing t e machine to discharge a half dollar, a quarter, a dime, a nickel and three pennies a total of 93 cents. The change returned is shown graphically at the right hand end of Fig. 1 in the square in the second vertical column in which 7 cents is the amount due or the amount of the sale. When the-7 key is depressed the bar 3 shoxwnin Figs.Y 8, 9 and 10 is depressed turning the bell crank 9 and by means of the stud 37 shown in Figi 8 moving the slides 15 and 17 to the left of Fig. 8. This moves the cams 22 and 24 on the said slides beneath the pawls 25 and34 'shown in Figs. 4 and 5 and engages these pawls over the Ipenny ejector levers 28 and-36,the ejector lever 28 being adapted to eject two pennies from its coin stack and the ejector lever 36 being adapted to eject one penny 'from' its coin stack making a total of three fpennies. This same downward movement o the key 7 by means of the shoulder 43 thereon shown in Fig. 7 turns the primary selector shutter l44 on its axis and by means of the bail 47, which engages the lug 97 on the nickel selectorslide 49, thi's slide is moved to the left of Fig. 12 s'o that the lug 76 is moved ofi the stud 54. This allows -the latch 67 on the dollar operating lever 69 to move into engagement with its companion arm 75. At the same time the movement of the bail 47 as indicated on the 6--10 line at the bottomof Fig. '3 moves the silver selector slide Number 2 tothe-left. By referring to Fig. 20 the three l bottom left hand end of slide Ngs moves the three secondary selector shutters u on the umber 2 

